XSS in Nagios Xi
CVE-2024-13993
Nagios XI versions prior to < 2024R1.1.2 are vulnerable to a reflected cross-site scripting (XSS) via the login page when accessed with older web browsers. Insufficient validation or escaping of user-supplied input reflected by the login page can allow an attacker to craft a malicious link that, when visited by a victim, executes arbitrary JavaScript in the victim’s browser within the Nagios XI origin. The issue is observable under legacy browser behaviors; modern browsers may mitigate some vectors.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.007 (51.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Nagios Nagios_xi — versions 2024
- Nagios Xi — versions 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (vendor-advisory, patch, Vendor Advisory)
- disclosure@vulncheck.com (release-notes, Release Notes, patch)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2024-13993?
- CVE-2024-13993 is a medium-severity vulnerability in Nagios Xi, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-10-30.
- How severe is CVE-2024-13993?
- Medium severity. CVSS v3 base score is 6.1 out of 10.